use to buy the cabelas 12v battery, 9 amp I think
but after one got puffy on me,
last one I got was from amazon
12v and 10.5 amp
around 25 bucks
chrome brand
still going strong
http://www.amazon.com/BATTERY-10-5AH...036166&sr=1-17
the more amps the better
but size was/is an issue for me
has to fit in my box I bought from Fry's
this is the charger I have been using for some years now
works ok for the car too
http://www.amazon.com/Battery-Tender...battery+tender
battery tender about 28 bucks
found this too
might be relevant...
http://slickdeals.net/f/8094462-mono...-free-shipping
with the plus 2 year plan
if the finder is over 400.00 at west marine
and past the 1 year manufacture warranty
they will want (you/them not sure yet)to send the unit back to the manufacture
rather than just replace in store
its in the small print at the back of the brochure
and what I'm in the process of dealing with
also
register the unit as soon as u can after purchase
they could not find my upc item no.
because I waited to0 long and they had puter issues since my purchase
year and a few months ago
there was some confusion with my issue
now I have to wait a few days for a call back
after making two trips to west marine
emailing them copies of my receipts
and a lengthy phone call to Texas
ugg
P
oh yeah
the issue was it loosing bottom while in auto mode
supposedly a firmware flash should fix
but I was having probs getting the card slot in the finder to see the card
and thinking that the corrosion it got might be the cause